Lesley,
As a male dentist, chocolate would go a lot further for me than flowers. Of course I'm kidding and I'm sure any kind of a thank you gesture, would be greatly appreciated.
We dentists take it on the chin pretty often and most of the time it is undeserved. Can't even count the times I've heard from a new patient, "I hate dentists". When I get a simple thank you, it can make my day. Unfortunately, as I've learned from this forum, failure to diagnose oral cancer happens much too often and those that help to save a life, deserve the recognition.
It's nice to be appreciated.
Jerry